Nginx 1.15.8 官方于2018年12月25号发布，在圣诞节后我们也及时发布了版本。

官方更新日志（http://nginx.org/en/CHANGES）：

Changes with nginx 1.15.8                                        25 Dec 2018

    *) Feature: the $upstream_bytes_sent variable.
       Thanks to Piotr Sikora.

    *) Feature: new directives in vim syntax highlighting scripts.
       Thanks to Gena Makhomed.

    *) Bugfix: in the "proxy_cache_background_update" directive.

    *) Bugfix: in the "geo" directive when using unix domain listen sockets.

    *) Workaround: the "ignoring stale global SSL error ... bad length"
       alerts might appear in logs when using the "ssl_early_data" directive
       with OpenSSL.

    *) Bugfix: in nginx/Windows.

    *) Bugfix: in the ngx_http_autoindex_module on 32-bit platforms.